Nothing close enough? Start from a blank single‑line diagram → Describe it in one paragraph.
How to use a single‑line diagram template.
- 01Choose your generation equipment
Select the solar inverter, battery storage, and other components you need from the library.
- 02Arrange components and grid connection
Place your inverter, meter, isolation switches, and grid connection point in a logical layout.
- 03Configure G99 compliance details
Add protection settings, export limitation devices, and earthing arrangements to meet G99 requirements.
- 04Generate and download your SLD
Click create and instantly download your single line diagram as a PDF or image for submission.
Questions about single‑line diagram templates
What is a G99 single line diagram?
A G99 single line diagram is a simplified electrical schematic showing how generation equipment connects to the grid, as required by the G99 engineering recommendation for installations in the UK.
Do I need a G99 SLD for my solar panels?
Yes, if your solar installation has a capacity above 3.68kW (single phase) or if the DNO requires it, you must submit a G99 application with a compliant single line diagram.
Can I create a G99 single line diagram online?
Absolutely. Our free online generator lets you quickly build a G99-compliant SLD by dragging and dropping components, no technical drawing skills needed.
What must be shown on a G99 SLD?
Your diagram should clearly show the generator (inverter), grid connection point, protection devices (fuses, MCBs), isolation switches, earthing, and any export limitation equipment.
How do I submit my G99 application?
Once your single line diagram is complete, submit it along with the G99 form and other required documents to your local Distribution Network Operator (DNO). Always check their specific requirements.